Nipper



May 31, 1927.

w. BERRY NIPPER 2 Sheeis-Sheet 1 Filed April 2, 926

7a 'tmess: 7 2 W May 31,1927. 1,630,518

W. A. BERRY NIPPER Filed April 2, 1926 2 Sheets-Sheet 2 Patented May 31,1927.

wILLfAM A. BERRY, orxnivra, orrro, reserve To aid-ever & amigos COM- PNY, or XENIA, onto,

A oonrditarron or onto.

nirrn'n.

Application filed April 2, 1926. Serial ac. 99,240.

This invention relates to improvements in uippers for spini'iing twineor the like, and has for its principal object to provide im provedconstruction of devices of the character described, whereby a stronger,smoother and rounder yarn may be formed.

The invention may best be understood by reference to the accompanyingdrawings, in which Figure 1 is a side View of an apparatus embodying oneform of the invention.

Figure 2 is a rear View of the apparatus shown in Figure 1.

Figure 3 is a detail side View showing the upper and lower nipperblades.

Figure 4 is a front view of the blades shown in Figure 3.

Figure 5 is a view of the bottom face of the upper nipper blade.

Figure 6 is a view of the upper face of the lower nipper blade.

In the apparatus illustrated herein, the

nipper frame 10 supports a bell 11 of the usual construction, herein thebell being detachably connected to the front end of the frame by bolts11 -11 at opposite sides thereof.

The nipper blades comprise an upper member 15 and a lower member 16,with meeting faces arranged in horizontal alignment with the opening 19of the bell 11. The lower nipper blade 16 is suitably secured in theframe 10, herein by means of a set screw 17 extending through one sideof the frame. The upper blade 15 is mounted for vertical movementrelative to the lower blade and the frame, herein said upper bladefitting in a longitudinal slot 18 opening upwardly from the bottom bladethroughout the length of the frame 10.

Means are provided for exerting a constant pressure upon the upper blade15 throughout its length. For this purpose, a weighted lever 20 ispivoted to the upper end of a support 21 detachably secured to a bracket22 at one side of the frame 10. The lever 20 passes through a hole 24substantially at the center of the blade 15, and the height of thepivotal support 21 is preferably arranged so that the lever 20 will besubstantially horizontal when the upper blade is in its lowermostposition, as shown in Figure 2.

Referring now to the novel conformation of the nipper blades throughwhich the sliver is passed, each of the blades 15 and 16 is providedwith oppositely disposedforward flaring portions 25, 25 flattenedportions 26, 2 6 and grooves 27, 27,'as best seen in Figures 3 to;6. Aswill be seen in Figure i, the forward flaring portions are somewhatdeeper on their vertical axes so as'to form an elliptical opening withits major axis extending vertically. This opening is ii'nnietliatelybehind the aperture 19 in the bell, said aperture also being ellipticalin shape. The grooves 27, 27 are substantially uniform in cross sectionintermediate their ends, but the forward ends of these grooves aretapered to points 28, 28, as clearly shown in Figures 3, 5 and 6. Thistapering or pointed conformation of the grooves is found to be ofespecial advantage in devices of this character, as will now appear fromthe following description of the operation of the device.

The sliver is brought into a compact form at the center of the bell 11,in the usual main ner, and passes through the elliptical aperture 19 inthe bell. 11, and thence into the elliptical opening formed by theflaring portions 25, 25 of the nipper blades 15 and 16. As the sliverpasses on through the nipper, it is held between the flat portions 26,26 in a flat ribbon-like form by the pres sure of the upper blade 15upon the lower blade 16. From this point on, the usual twisting actionis effective upon the sliver, so that the twist is allowed to approachthrough the length of the grooves 27, 27 up to the flat surfaces 26, 26where it is held in flat ribbon-like form, as already described. Now,011 account of the tapered portions 28, 28 of the grooves 27, 27immediately behind the fiut holding surfaces 26, 26 the twist takes holdof the flattened sliver at its center before it effects the edgesthereof, with the result that a smoother, rounder yarn is formed thanwith present devices, in which the twist is simultaneously effectivealong the entire width of the flattened sliver, so that a more or lesscork-screwy yarn is formed. Furthermore, by reason of the special shapeof tapered grooves and holding surfaces above described, the fibres aremore perfectly secured and wound into the yarn, than is the case withmany nippers in which the flattened holding sections and the groovedsections are in spaced relation from each other, or still other forms inwhich the grooves are flared outwardly at the point adjoining theflattened sliver holding sections.

My improved construction has a further advantage of simplicity ofconstruction wherein the flat holding portions 26, 26 and grooves 27, 27are formed on the same nipper blades, and uniform pressure is maintainedupon the sliver throughout its length While it is being passedtherethrough.

I claim as my invention:

1. In a device of the character described a pair of cooperating nipperblades having flared opening portions, oppositely disposed,

flattened holding faces, and contiguous smoothing grooves each of saidflattened faces terminating at its respective groove, and having itsside margins diverging gradually to the full Width of said groove.

2. In a device of the character described,

a pair of cooperating nipper blades having flared opening portions,oppositely disposed,

toward and terminating directly at said flattened faces.

Signed at Xenia, Ohio, this 27 day of March, 1926.

WM. A. BERRY.

